Basic Electrical Engineering MCQs with answers Page - 2

Here, you will find a collection of MCQ questions on Basic Electrical Engineering. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. A phase difference of 180deg in the circular motion model of a sine wave represents

  • (A) ¼ revolution
  • (B) ½ revolution
  • (C) A full revolution
  • (D) Two full revolution

A

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Q. A network that does not have either voltage or current source is called network

  • (A) Active
  • (B) Passive
  • (C) Resistive
  • (D) Dummy

A

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Q. A material with a high dielectric constant

  • (A) Acts to increase capacitance per unit volume
  • (B) Acts to decrease capacitance per unit volume
  • (C) Has no effect on capacitance
  • (D) Causes a capacitor to become polarized

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Q. A house served by a 220V supply light, is protected by a 9-Ampere fuse. The maximum number of 60 W bulbs in parallel that can be turned on is

  • (A) 11
  • (B) 33
  • (C) 22
  • (D) 44

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Q. A flute sounds different than a violin, even if the two instruments are played at the same pitch, because of a difference in the

  • (A) Phase
  • (B) Chamber length
  • (C) Frequency
  • (D) Waveform

A

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Q. A ferromagnetic core is place in the inductor to

  • (A) Increase the current carrying capacity
  • (B) Increase the inductance
  • (C) Limit the current
  • (D) Reduce the inductance

A

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Q. A degree of phase represents

  • (A) 6.28 cycles
  • (B) 57.3 cycles
  • (C) 1/60 of a cycle
  • (D) 1/360 of a cycle

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Q. A dc to dc converter having an efficiency of 80% is delivering 16W to a load. If the converter is generating an output of 200V from an input source of 20V, then the current drawn from the source will be?

  • (A) 0.1A
  • (B) 0.5A
  • (C) 1.0A
  • (D) 10.0A

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Q. A dc electromagnet

  • (A) has constant polarity
  • (B) Requires an air core
  • (C) Cannot be used to permanently magnetize anything
  • (D) Does not attract or repel permanent magnet

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Q. A current surge takes place when a power supply is first turned on because

  • (A) the transformer core is suddenly magnetized
  • (B) the diodes suddenly start to conduct
  • (C) the filter capacitor must be initially charged
  • (D) arching takes place in the power switch

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